Recent advances in the study of colloidal nanocrystals enabled by in situ liquid-phase transmission electron microscopy

35 Voices from Chemistry of Materials: Creativity, Collaboration, and Persistence

“…CM: VJ contributed to a recent review on the application of liquid phase transmission electron microscopy to the study of colloidal nanocrystals …”

“…CM: VJ contributed to a recent review on the application of liquid phase transmission electron microscopy to the study of colloidal nanocrystals. 5 CM: What do you see as a grand challenge in the field of materials and what would help the community address this challenge?…”

Nanoelectrochemistry in electrochemical phase transition reactions

“…46 For example, in situ TEM methods, including the use of graphene membranes, have enabled the imaging of the growth and dissolution of nanoparticles with atomic resolution. [67][68][69] Combining these approaches with electrochemical control and measurement is promising in revealing the dynamics of the nucleation sites on the electrode surface. 70 In addition, high-speed atomic force microscopy (HS-AFM), which has observed increasing use in imaging the dynamics of proteins and biomolecules, 71 seems suitable to capture the electrochemical nucleation processes in situ.…”

Dissolution Heterogeneity Observed in Anisotropic Ruthenium Dioxide Nanocrystals via Liquid-Phase Transmission Electron Microscopy

“…Liquid-phase transmission electron microscopy (LP-TEM) performed with graphene liquid cells enables the direct observation of nanoscale structural dynamics with near-atomic spatial resolution and high temporal resolution. − Recent advances in our understanding of the electron-beam-induced chemical reactivity generated during LP-TEM imaging have made it possible to modulate the reactive environment via redox additives to a high degree of electrochemical precision . Additionally, in situ observations of redox chemistry have substantially improved our ability to accurately model the complex chemical environment created during LP-TEM. , These advances allow for the investigation of systems composed of multiple elements, such as RuO 2 , utilizing redox additives capable of generating electrochemical environments that lead to nanoscale structural dynamics …”